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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Bifora 910/1(CLD)

manual wind
sweep second
date: set by changing 21-24h

11.5''', Dm= 25.6mm
H= 3.65mm
(winding gear +0.4mm)
F= 0.8mm
T= 2.15mm
17/23 jewels
f = 18000 A/h
power reserve 39h

Balance staff U2912

Stem W2933

Mainspring / battery
Zf663, 1.20 x 8.0 x 0.09 x 250mm

1.40 x 0.85 x 0.22mm

Comments about the data

in later samples setting lever with pin instead screw, and minute wheel with pin (cf. Bifora 91/1)
these parts can be used for older samples, if the minute-wheel pin is removed from the plate, and/or a modified setting-lever spring is used
signature only Bifora 910, respectively 910/1

91: manual wind, sub second
91(SC): manual wind, sweep second
910: manual wind, sub second
910(SC): manual wind, sweep second
910(CLD): manual wind, sweep second, date
910(AUT): automatic, sweep second
910(AUT-CLD): automatic, sweep second, date
suffix /1: modified setting lever and minute wheel (transition floating)

Example, year: signature; shock device
ca. 1970: Bifora 910/1; Bifora-Bishock

Not for Sale!
The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating.

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